38103749 has 4 divisors (see below), whose sum is σ = 40345164. Its totient is φ = 35862336.

The previous prime is 38103733. The next prime is 38103761. The reversal of 38103749 is 94730183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94730183 = 4177 ⋅22679.

It can be written as a sum of positive squares in 2 ways, for example, as 23716900 + 14386849 = 4870^2 + 3793^2 .

It is a cyclic number.

It is not a de Polignac number, because 38103749 - 2⁴ = 38103733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38103049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120682 + ... + 1120715.

It is an arithmetic number, because the mean of its divisors is an integer number (10086291).

Almost surely, 2^38103749 is an apocalyptic number.

It is an amenable number.

38103749 is a deficient number, since it is larger than the sum of its proper divisors (2241415).

38103749 is a wasteful number, since it uses less digits than its factorization.

38103749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241414.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 38103749 is about 6172.8234220655. The cubic root of 38103749 is about 336.5032289519.

The spelling of 38103749 in words is "thirty-eight million, one hundred three thousand, seven hundred forty-nine".